Finding the Fourth Proportional to 2,066.51, 3,100.22 and 679.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,066.51 : 3,100.22 = 679.79 : x
2. Step 2: Convert to fraction form
   2,066.51/3,100.22 = 679.79/x
3. Step 3: Cross multiply
   2,066.51x = 3,100.22 × 679.79
4. Step 4: Simplify right side
   2,066.51x = 2,107,487.40
5. Step 5: Solve for x
   x = 2,107,487.40/2,066.51
6. Step 6: Final answer
   x = 1,019.83